TrueCraft!

Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner, Minecraft, and the like.

ROBLOX is an online virtual playground and workshop - where kids of all ages can safely interact, create, have fun, and learn.

Terasology (started under the name Blockmania) is an open source project started by Benjamin “begla” Glatzel to research procedural terrain generation and efficient rendering techniques in Java using the LWJGL. The engine uses a block-based voxel-like approach as seen in Minecraft. After proving itself as a solid tech demo begla was joined at first by Anton “small-jeeper” Kireev and Rasmus “Cervator” Praestholm and a full-fledged game concept was born.

The Fun-Focused Free Software Voxel World Game.

You are marooned on the shores of an infinite blocky world. Explore, mine resources, craft tools and weapons, hunt and make traps. Build a shelter to survive nights and share your worlds online. Possibilities are infinite in this sandbox survival and construction game.

Creativerse is a sandbox adventure game set in a beautiful yet treacherous world shrouded in mystery. Adventure solo or bring your friends, unearth secrets, and tame the land together!

Freeminer is a Minecraft-inspired sandbox game.

Blockland is a non-linear sandbox game with no set goals, giving players the freedom to design and construct elaborate structures. Styled as a tiny minifigure, players build inside of the virtual world using bricks reminiscent of toy blocks. These structures can be built in either a single-player or multiplayer (either online or through a local area network) setting.

Manic Digger is an open-source implementation of block-building games, like the famous game Minecraft.Manic Digger aims to be a generic platform ontop of which you can create your own game-types and scenarios. Through server-side scripting, almost any type of block-building game should be possible.

Minecraft Clone to PSP

MineDroid is a viewer / concept design for Minecraft that supports using your own 1.3 beta levels, temporarily building and destroying blocks, sensor steering, crouch jump, ghost mode / fly mode. more features to come, you can get the source and help out too

Blockscape is the next generation voxel sandbox game.

FreeCraft is a free block building adventure game.Build and craft to survive. You are only limited by your imagination.Features:- Completely free!- Gorgeous 3D graphics. This is the most beautiful 3D block building game ever created- Zombie mode: Build a home to protect yourself against the zombies which come at nightIf you love classic block building such as Minecraft and Survivalcraft, you will love this next generation block craft game! We hope you enjoy our game.

A game where you are on the moon and you must survive. There is crafting and many other strange things in this game.